AU0808072 294〇2twf.doc/d 九、發明說明： 【發明所屬之技術領域】 特別it有f於—種可切換式平面立體顯示器，且 的可切換式平面立體顯示器。 ） 【先前技術】 …近年來’隨著顯示技術的顿進步，使用者對於顯 不器之顯示品質（如影像解析度、色彩飽和度等）的要 求也越來越®。然而，除了高影像解析度以及高色彩飽 和度之外’對於使用者而言，顯示器是否能夠顯示立體 影像亦成為購買上的考量因素之一。 —目前發展出來的立體影像顯示技術，主要是利用固 定式光栅來控制觀賞者左眼與右輯接❹_彡像。根 f人目f的視覺特性，當左、右眼分職視相同的影像内 合但疋具有不同視差(parallax)的二影像時，人眼會觀察 將二影像重疊解讀成—立體影像。依照光栅位置的不 同’可將立體顯示技術大致上區分為前光栅式（front barrier)立體顯示技術以及後光栅式(back barrier)立體顯 不技術兩種。 值得注意的是’利用固定式光栅來產生立體影像屬 於一種空間多工(Spatial_multiplexed)的方式，此方式雖然 可以使得液晶顯示面板具有立體顯示之效果，但卻使立 體顯不杰之解析度減半。此外’具有固定式光柵之立體 顯不斋只能用來顯示立體影像而無法顯示平面影像。對 1328714 AU0808072 29402twf.doc/d 於使用者而言，具有固定式光栅之立體顯示器的實用性 不尚。 因此為解決上述問題’-種可切換式光M(swkchMe barrier)已被應用於可切換式平面立體顯示器中以使可 =換式平面立體顯示H能夠在可切換式光栅未被開啟的 情況下顯4平面影像。當可域式光栅被·時，可 切換式平面立體顯示器便能夠顯示出立體影像。具體而 言’在習知的刊換式平面立體顯示器+，若液晶顯示 面板為扭轉向列型液晶顯示面板（Twisted Nematie Liquid Crystal Dispiay Pand)時’通常會選用一常態白色模 式之扭轉向列型液晶盒(n〇rmally她此m〇(je tn_lc Cell) 作為可切換式光柵’且扭轉向列型液晶顯示面板與扭轉 =列型液晶盒中的液晶會具有相同的旋性⑽如丨）。然而， 二，構之可切換式平面立體顯示器在顯示品質方面（如 對比、視肖對稱性）仍有改善的空間。AU0808072 294〇2twf.doc/d IX. Description of the invention: [Technical field to which the invention pertains] In particular, there is a switchable planar stereoscopic display, and a switchable planar stereoscopic display. [Prior Art] ...In recent years, with the advancement of display technology, users have become more and more demanding for display quality (such as image resolution, color saturation, etc.) of the display. However, in addition to high image resolution and high color saturation, it is one of the factors of purchase consideration for the user to be able to display stereoscopic images. - The currently developed stereoscopic image display technology mainly uses a fixed grating to control the viewer's left eye and right image. The visual characteristics of the roots f, when the left and right eyes are divided into the same image but have two parallax images, the human eye will observe and interpret the two images as a stereo image. The stereoscopic display technology can be roughly classified into two types: front barrier stereoscopic display technology and back barrier stereoscopic display technology according to the difference in raster position. It is worth noting that 'the use of fixed gratings to generate stereoscopic images is a spatially multiplexed way. Although this method can make the liquid crystal display panel have the effect of stereoscopic display, it reduces the resolution of stereoscopic display. . In addition, stereoscopic display with fixed grating can only be used to display stereoscopic images and cannot display flat images. For the user, 1328714 AU0808072 29402twf.doc/d is not practical for a stereoscopic display with a fixed grating. Therefore, in order to solve the above problem, a swkchMe barrier has been applied to a switchable planar stereoscopic display so that the convertible planar stereoscopic display H can be turned on without the switchable grating being turned on. Display 4 plane images. When the field-type grating is used, the switchable planar stereo display can display a stereoscopic image. Specifically, 'in the conventional published flat-panel display +, if the liquid crystal display panel is a twisted nematic liquid crystal display panel (Twisted Nematie Liquid Crystal Dispiay Pand), a normal white mode twisted nematic type is usually selected. The liquid crystal cell (n〇rmally her jjen_lc Cell) acts as a switchable grating' and the twisted nematic liquid crystal display panel has the same spinness (10) as the liquid crystal in the twist=column type liquid crystal cell. However, there is still room for improvement in the display quality (such as contrast, visual symmetry) of the switchable planar stereo display.
【發明内容】 本發明提供—财域式平面立 杈佳的顯示品質。 八/、肩 =發明提出-種可切換式平面立體顯示器，包括一 -板以及一可切換式光栅。液晶顯示面板包括 絲ί —相對於第一基板之第二基板、一第一扭 也：歹第ft —第—廣視角膜組以及-第-偏振片 間。第晶層配置於第—基板與第二基板之 角膜，第：ΐϊϊ、、純含—第—廣視角膜及-第二廣視 、 g視角膜配置於第一基板之外表面上以及第 AU0808072 29402twf.doc/d 二廣視角膜配置於第二基板之外表面上。另外，第 振片組包含-第-偏振片及—第二偏振片。第—偏 組配置於第-廣視角膜組之上，以使得第—廣視角^ 於第-偏振片與第-基板之間以及第二廣視角膜配置於 第二偏振片與第二基板之間，其中第—偏振片的點 與第二偏振片的穿透軸實質上相互垂直。另外，可切 式光柵包括一第三基板及一相對於該第三基板之第四基 板二一第二扭轉向列液晶層、一第二廣視角膜組以及二 第二偏振片組。第二扭轉向列液晶層配置於第三基 第四基板之間’其中第二扭轉向列液晶層的旋性與第二 扭轉向列液晶層的旋性相反。第二廣視角膜組包含一 士廣視角膜與-第四廣視肖膜’第三廣視舰配置於第 二基板之外表面上以及第四廣視角膜配置於第四基板之 外表面十。第二偏振片組包含一第三偏振片及一第四偏 振片丄第二偏振片組配置於第二廣視角膜組之上，以使 得第三廣視角膜位於第三偏振片與第三基板之間以及第 四廣視角膜片配置於第四偏振片與第四基板之間，其中 第三偏振片的穿透軸與第四偏振片的穿透軸實質上相互 垂直。 在本發明之一實施例中，液晶顯示面板更包括一第 一配向膜組。其包含一第一配向膜與一第二配向膜，第 一配向膜配置於第一基板的内表面上’且位於第一基板 與弟一扭轉向列液晶層之間，以及第二配向膜配置於第 '一基板的内表面上，且位於弟·一基板與第一扭轉向列液 晶層之間，其中第一配向膜的配向方向與第二配向膜的 配向方向(rubbing direction)實質上相互垂直。 1328714 AU0808072 29402twf.doc/d 在本發明之一實施例中，液晶顯示面板中第一配向 膜之配向方向與第一偏振片的穿透轴實質上相互垂直或 者第二配向膜之配向方向與第二偏振片的穿透軸實質上 相互垂直。 在本發明之一實施例中，可切換式光柵更包括一第 二配向膜組，其包含一第三配向膜與一第四配向膜。第 三配向膜配置於第三基板内表面上，且位於第三基板與 第二扭轉向列液晶層之間’以及第四配向膜配置於第四 基板内表面上’且位於第四基板與第二扭轉向列液晶層 之間’其中第二配向膜的配向方向（rubbing direction)盘第 四配向膜的配向方向實質上相互垂直。 在本發明之一實施例中，可切換式光栅中第三配向 膜之配向方向與第三偏振片的穿透軸實質上相互垂直咬 者第四配向膜之配向方向與第四偏振片的穿透軸實質上 相互垂直。 在本發明之一實施例中，第二偏振片的穿透軸與第 三偏振片的穿透轴實質上相互平行。 在本發明之一實施例中，第四偏振片的穿 -偏振片的穿透軸實質上相互平行。 ^與弟 在本發明之-實施例中’第二配向膜的配向方向盘 第三配向膜的配向方向實質上相互平行。 /、 在本發明之-實施例中，第四配向膜的配向方向I 第一配向膜的配向方向實質上相互平行。 由於本發明在可切換式光柵中所採用的扭轉向列液 晶層與液晶顯示面板中所採用的扭轉向列液晶層具 反的旋性，因此，本發明之可切換式平面立二‘;哭】 9 AU0808072 29402twf.doc/d 有較佳的顯示品質。 為讓本發明之上述特徵和優點能更明顯易懂，下文 特舉實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖1為本發明一實施例之可切換式平面立體顯示器 的示意圖。請參照圖1，本實施例之可切換式平面立體顯 示器100包括一液晶顯示面板200以及一可切換式光柵 300。液晶顯示面板200包括一第一基板21〇、一相對於 第一基板210之第二基板212、一第一扭轉向列液晶層 220、一第一廣視角膜組230以及一第一偏振片組24〇。 第一扭轉向列液晶層220配置於第一基板210與第二基 板212之間。第一廣視角膜組230包含一第一廣視角膜 232及一第二廣視角膜234，第一廣視角膜232配置於第 一基板210之外表面210a上，而第二廣視角膜234配置 於第二基板212之外表面212a上。另外，第一偏振片組 240包含一苐一偏振片242及一第二偏振片244。第一偏 振片組240配置於第一廣視角膜組230之上。詳言之， 第一廣視角膜232位於第一偏振片242與第一基板210 之間，且第二廣視角膜234配置於第二偏振片244與第 二基板212之間，其中第一偏振片242的穿透軸與第二 偏振片244的穿透軸實質上相互垂直。 可切換式光栅300包括一第三基板310及一相對於 第三基板310之第四基板312、一第二扭轉向列液晶層 320、一第二廣視角膜組330以及一第二偏振片組34〇。 1328714 AU0808072 29402twf.doc/d 第二扭轉向列液晶層32〇配置於第三基板31〇與第四基 板312之間’其中第二扭轉向列液晶層32〇的旋性與第 扭轉向列液晶層220的旋性相反。第二廣視角膜組330 包含一第二廣視角膜332與一第四廣視角膜334,第三廣 視角膜332配置於第三基板31〇之外表面31〇&上，而第 四廣視角膜334配置於第四基板312之外表面312a上。 第二偏振片組340包含一第三偏振片342及一第四偏振 片344 ’第二偏振片組340配置於第二廣視角膜組330之 詳言之，第三廣視角膜332位於第三偏振片342與 第二基板310之間，且第四廣視角膜334配置於第四偏 =片344與第四基板312之間，其中第三偏振片342的 牙透軸與第四偏振片344的穿透軸實質上相互垂直。 圖1中綠示為可切換式光栅3〇〇配置於液晶顯示面 ，200上方的實施方式。然而，本發明並不限定於此。 意即，可切換式光栅30〇亦可配置於液晶顯示面板2〇〇 的下方，且可以達到與上述實施例相同的效果。更具體 而吕I可將液晶顯示面板200配置於可切換式光柵3〇〇 與一％光模組之間，以構成一前光柵式立體顯示器，此 外，=可將可切換式光柵3〇〇配置於液晶顯示面板2〇〇 與一为光模組之間，以構成一後光柵式立體顯示器。 在本實施例中’可切換式光柵3〇〇例如是一常態白色 模^之扭轉向列型液晶而當可切換式光栅未被開 啟時，液晶顯示面板200所顯示的平面影像便可直接被 使用者所觀看到。反之，當可切換式光柵300被開啟時， 使用者便可觀察到立體影像。 11 AU0808072 29402twf.doc/d 請繼續參照圖1，本實施例之液晶顯示面板200可選 擇性的包括一第一配向膜組250。第一配向膜組250包含 一第一配向膜252與一第二配向膜254,第一配向膜252 配置於第一基板210的内表面210b上，且位於第一基板 210與第一扭轉向列液晶層220之間，以及第二配向膜 254配置於第二基板212的内表面212b上，且位於第二 基板212與第一扭轉向列液晶層220之間。第一配向膜 252、第二配向膜254的作用在於使第一扭轉向列液晶層 220中的液晶分子呈現特定的預傾角及配向方向。當第一 扭轉向列液晶層220中的液晶分子依照設計，藉由第一 配向膜252、第二配向膜254而呈現特定的預傾角及配向 方向時’液晶顯示面板200可以具有較佳的顯示效果， 例如具有較廣的視角。需要特別注意的是，本實施例之 第一配向膜252的配向方向與第二配向膜254的配向方 向(rubbing direction)實質上相互垂直。 在本實施例中，可切換式光栅300亦可選擇性的包 括一第二配向膜組350。第二配向膜組35〇包含一第三配 向膜352與一第四配向膜354,第三配向膜352配置於第 三基板310内表面310b上，且位於第三基板310與第二 扭轉向列液晶層320之間，而第四配向膜354配置於第 四基板312内表面312b上，且位於第四基板312與第二 扭轉向列液晶層320之間。值得注意的是，第三配向膜 352的配向方向(rubbing direction)與第四配向膜354的配 向方向實質上相互垂直。 圖2A為液晶顯示面板中配向膜的配向方向與偏振 片的穿透轴兩者相對位置的示意圖。在本發明的一較佳 1328714 AU0808072 29402twf.d〇c/d 實施例中’上述液晶顯示面板2〇〇中第一配向膜252之 配向方向Dl與第一偏振片242的穿透軸八〗實質上相互 垂直。在本發明的另一較佳實施例中，第二配向膜254 之配向方向D2與第二偏振片244的穿透軸八2實質上相 互垂直。值得注意的是，當第一配向膜252之配向方向 Di與第一偏振片242的穿透轴入1實質上相互垂直，且第 二配向膜254之配向方向與第二偏振片244的穿透軸 八2亦實質上相互垂直時，可切換式平面立體顯示器ι〇〇 可具有較佳的顯示效果。 圖2B為可切換式光柵中配向膜的配向方向與偏振 片的穿透軸兩者相對位置的示意圖。在本發明的一較佳 實施例中，上述可切換式光栅30〇中第三配向膜352之 配向方向A與第三偏振片342的穿透軸八3實質上相互 垂直。在本發明的另一較佳實施例中，第四配向膜354 之配向方向D4與第四偏振片344的穿透軸八4實質上相 互垂直。值得注意的是，當第三配向膜352之配向方向 D3與第三偏振片342的穿透軸八3實質上相互垂直，且第 四配向膜354之配向方向d4與第四偏振片344的穿透軸 A*亦實質上相互垂直時’可切換式平面立體顯示器1〇〇 可具有較k的顯示效果。更佳的是，若上述圖2A與圖 2B之情況皆成立’可切換式平面立體顯示器ι〇〇將可具 有更佳的顯示效果。在上述實施例中，第一扭轉向列液 晶層220的旋性為順時鐘旋轉9〇度，第二扭轉向列液晶 層320的旋性為逆時鐘旋轉9〇度，可達到第一扭轉向列 液晶層220與第二扭轉向列液晶層32〇的旋性相反。 在本發明的又一較佳實施例中，第二偏振片244的 13 AU0808072 29402twf.doc/d 二透軸八2與第二偏振片342的穿透軸、實質上相互平 行。換句話說，第四偏振片344的穿透軸\實質上垂直 於第二偏振片244的穿透軸a2。 、 ^在本發明的其他較佳實施例申，第四偏振片344的 牙透軸八4與第一偏振片242的穿透軸八1實質上相互平 行。值得注意的是，當第二偏振片244的穿透轴a2與第 三偏振片342的穿透軸A;實質上相互平行，且第四偏振 片344的穿透軸A*與第一偏振片242的穿透軸Al實質 上相互平行時，可切換式平面立體顯示器1〇〇可具有較 佳的顯示效果。 在本發明另一實施例中，第二配向膜254的配向方 向D2與第三配向膜352的配向方向D3實質上相互平行。 也就是說，第二配向膜254的配向方向D2與第三配向膜 352的配向方向D3兩者間相差為0°或是180°。更詳細的 來說，第二配向膜254之配向方向D2的起點和終點，與 第三配向膜352的配向方向D3之起點和終點相同時，第 二配向膜254之配向方向〇2與第三配向膜352的配向方 向D3相差〇°。反之’當第二配向膜254的配向方向D2 之起點為第三配向膜的配向方向A之終點時’第二配向 膜254之配向方向與第三配向膜352的配向方向D3 相差180°。 在本發明又一實施例中’第四配向膜354的配向方 向D4與第一配向膜252的配向方向Dl實質上相互平行。 也就是說，第四配向膜354的配向方向D4與第一配向膜 252的配向方向Di兩者間相差為〇或疋18〇。更佳的貝 施方式是’第二配向膜254的配向方向與第三配向膜 AU0808072 29402twf.doc/d 352的配向方向D3實質上相互平行，同時第四配向膜354 的配向方向E>4也與第一配向膜252的配向方向實質 上相互平行。 圖3為第一扭轉向列液晶層與第二扭轉向列液晶層 兩者旋性相同或是旋性相反的光學模擬結果示意圖。請 參照圖1與圖3,當第一扭轉向列液晶層22〇與第二扭轉 向列液晶層320的旋性相反時，可切換式平面立體顯示 器100在顯示255灰階（L255)以及〇灰階（L〇)時， 會呈現圖3中左側之模擬結果。反之’若第一扭轉向列 液晶層220與第二扭轉向列液晶層32〇的旋性相同時， 可切換式平面立體顯示器1〇〇在顯示255灰階（L255) 以及〇灰階（L0)時，會呈現圖3中右侧之模擬結果。 從圖3所顯示的模擬結果可知，當第一扭轉向列液晶層 220與第二扭轉向列液晶層32〇的旋性相反時，可切換^ 平面立體顯示器100所顯示之影像的對比（CR)以及〇 灰階（L0)時，影像顯示均勻性較為優異。 果。補償膜的種類很多，SUMMARY OF THE INVENTION The present invention provides a good display quality of a financial domain. Eight/, shoulder = invention proposed - a switchable planar stereoscopic display comprising a plate and a switchable grating. The liquid crystal display panel comprises a wire ί - a first substrate relative to the first substrate, a first twist: 歹 ft - the first wide viewing angle film group and - the - polarizing film. The first crystal layer is disposed on the cornea of the first substrate and the second substrate, and the first: the first viewing angle and the second wide viewing angle and the second viewing angle are disposed on the outer surface of the first substrate and the AU0808072 29402twf.doc/d The second wide viewing angle film is disposed on the outer surface of the second substrate. Further, the first vibration plate group includes a -first polarizing plate and a second polarizing plate. The first partial group is disposed on the first wide viewing angle film group such that the first wide viewing angle is disposed between the first polarizing plate and the first substrate and the second wide viewing angle film is disposed on the second polarizing plate and the second substrate Meanwhile, the point of the first polarizing plate and the transmission axis of the second polarizing plate are substantially perpendicular to each other. In addition, the switchable grating comprises a third substrate and a fourth twisted nematic liquid crystal layer, a second wide viewing angle film group and two second polarizing film groups, a fourth substrate relative to the third substrate. The second twisted nematic liquid crystal layer is disposed between the third base fourth substrate. wherein the polarity of the second twisted nematic liquid crystal layer is opposite to that of the second twisted nematic liquid crystal layer. The second wide viewing angle film group comprises a wide viewing angle film and a fourth wide viewing mode, the third wide viewing ship is disposed on the outer surface of the second substrate, and the fourth wide viewing angle film is disposed on the outer surface of the fourth substrate. . The second polarizing plate group includes a third polarizing plate and a fourth polarizing plate. The second polarizing plate group is disposed on the second wide viewing angle film group such that the third wide viewing angle film is located on the third polarizing plate and the third substrate. The film between the fourth polarizing plate and the fourth substrate is disposed between the fourth polarizing plate and the fourth substrate, wherein a transmission axis of the third polarizing plate and a transmission axis of the fourth polarizing plate are substantially perpendicular to each other. In an embodiment of the invention, the liquid crystal display panel further includes a first alignment film group. The first alignment film and the second alignment film are disposed on the inner surface of the first substrate and located between the first substrate and the twisted nematic liquid crystal layer, and the second alignment film is disposed. On the inner surface of the first substrate, between the substrate and the first twisted nematic liquid crystal layer, wherein the alignment direction of the first alignment film and the rubbing direction of the second alignment film are substantially opposite to each other. vertical. 1328714 AU0808072 29402twf.doc/d In an embodiment of the invention, the alignment direction of the first alignment film in the liquid crystal display panel is substantially perpendicular to the transmission axis of the first polarizing film or the alignment direction of the second alignment film The transmission axes of the two polarizers are substantially perpendicular to each other. In an embodiment of the invention, the switchable grating further includes a second alignment film group including a third alignment film and a fourth alignment film. The third alignment film is disposed on the inner surface of the third substrate, and is disposed between the third substrate and the second twisted nematic liquid crystal layer and the fourth alignment film is disposed on the inner surface of the fourth substrate and located on the fourth substrate and the first substrate The direction of alignment of the second alignment film between the two twisted nematic liquid crystal layers in which the second alignment film is in a rubbing direction is substantially perpendicular to each other. In an embodiment of the invention, the alignment direction of the third alignment film in the switchable grating and the transmission axis of the third polarizer are substantially perpendicular to each other, and the alignment direction of the fourth alignment film and the fourth polarizer are worn. The through axes are substantially perpendicular to each other. In an embodiment of the invention, the transmission axis of the second polarizer and the transmission axis of the third polarizer are substantially parallel to each other. In an embodiment of the invention, the transmission axes of the through-polarizers of the fourth polarizer are substantially parallel to each other. ^与弟 In the embodiment of the invention - the alignment steering wheel of the second alignment film is substantially parallel to each other in the alignment direction of the third alignment film. In the embodiment of the present invention, the alignment direction of the fourth alignment film I is substantially parallel to the alignment direction of the first alignment film. Since the twisted nematic liquid crystal layer used in the switchable grating of the present invention has a reverse rotatory property to the twisted nematic liquid crystal layer used in the liquid crystal display panel, the switchable plane of the present invention is erected; 】 9 AU0808072 29402twf.doc/d has better display quality. The above described features and advantages of the present invention will become more apparent from the following description. [Embodiment] FIG. 1 is a schematic diagram of a switchable planar stereoscopic display according to an embodiment of the present invention. Referring to FIG. 1, the switchable planar stereoscopic display 100 of the present embodiment includes a liquid crystal display panel 200 and a switchable grating 300. The liquid crystal display panel 200 includes a first substrate 21A, a second substrate 212 opposite to the first substrate 210, a first twisted nematic liquid crystal layer 220, a first wide viewing angle film group 230, and a first polarizing plate group. 24〇. The first twisted nematic liquid crystal layer 220 is disposed between the first substrate 210 and the second substrate 212. The first wide viewing angle film set 230 includes a first wide viewing angle film 232 and a second wide viewing angle film 234. The first wide viewing angle film 232 is disposed on the outer surface 210a of the first substrate 210, and the second wide viewing angle film 234 is disposed. On the outer surface 212a of the second substrate 212. In addition, the first polarizer set 240 includes a first polarizing plate 242 and a second polarizing plate 244. The first polarizing plate group 240 is disposed above the first wide viewing angle film group 230. In detail, the first wide viewing angle film 232 is located between the first polarizing plate 242 and the first substrate 210, and the second wide viewing angle film 234 is disposed between the second polarizing plate 244 and the second substrate 212, wherein the first polarization The transmission axis of the sheet 242 and the transmission axis of the second polarizing plate 244 are substantially perpendicular to each other. The switchable grating 300 includes a third substrate 310 and a fourth substrate 312 opposite to the third substrate 310, a second twisted nematic liquid crystal layer 320, a second wide viewing angle film group 330, and a second polarizer group. 34〇. 1328714 AU0808072 29402twf.doc/d The second twisted nematic liquid crystal layer 32 is disposed between the third substrate 31 and the fourth substrate 312, wherein the second twisted nematic liquid crystal layer 32 is rotated and twisted nematic liquid crystal The polarity of layer 220 is reversed. The second wide viewing angle film set 330 includes a second wide viewing angle film 332 and a fourth wide viewing angle film 334 disposed on the outer surface 31〇 of the third substrate 31, and the fourth wide The viewing angle film 334 is disposed on the outer surface 312a of the fourth substrate 312. The second polarizing plate group 340 includes a third polarizing plate 342 and a fourth polarizing plate 344. The second polarizing plate group 340 is disposed in the second wide viewing angle film group 330. The third wide viewing angle film 332 is located in the third. The fourth wide viewing angle film 334 is disposed between the fourth polarizing plate 344 and the fourth substrate 312, wherein the tooth transmitting axis of the third polarizing plate 342 and the fourth polarizing plate 344 are disposed. The axes of penetration are substantially perpendicular to each other. Green in Fig. 1 shows an embodiment in which the switchable grating 3 is disposed above the liquid crystal display surface 200. However, the invention is not limited thereto. That is, the switchable grating 30A can also be disposed under the liquid crystal display panel 2A, and the same effects as those of the above embodiment can be achieved. More specifically, the LCD panel 200 can be disposed between the switchable grating 3〇〇 and a % optical module to form a front grating stereoscopic display. In addition, the switchable grating can be replaced. The liquid crystal display panel 2 is disposed between the optical module and the optical module to form a rear grating stereoscopic display. In the present embodiment, the 'switchable grating 3' is, for example, a normal white mode twisted nematic liquid crystal. When the switchable grating is not turned on, the planar image displayed by the liquid crystal display panel 200 can be directly Viewed by the user. Conversely, when the switchable grating 300 is turned on, the user can observe the stereoscopic image. 11 AU0808072 29402twf.doc/d With continued reference to FIG. 1, the liquid crystal display panel 200 of the present embodiment optionally includes a first alignment film group 250. The first alignment film set 250 includes a first alignment film 252 and a second alignment film 254. The first alignment film 252 is disposed on the inner surface 210b of the first substrate 210 and is located on the first substrate 210 and the first twisted nematic row. The liquid crystal layer 220 and the second alignment film 254 are disposed on the inner surface 212b of the second substrate 212 and between the second substrate 212 and the first twisted nematic liquid crystal layer 220. The first alignment film 252 and the second alignment film 254 function to cause the liquid crystal molecules in the first twisted nematic liquid crystal layer 220 to exhibit a specific pretilt angle and alignment direction. When the liquid crystal molecules in the first twisted nematic liquid crystal layer 220 are designed to exhibit a specific pretilt angle and alignment direction by the first alignment film 252 and the second alignment film 254, the liquid crystal display panel 200 can have a better display. The effect, for example, has a wider viewing angle. It is to be noted that the alignment direction of the first alignment film 252 of the present embodiment and the rubbing direction of the second alignment film 254 are substantially perpendicular to each other. In this embodiment, the switchable grating 300 can also optionally include a second alignment film set 350. The second alignment film group 35 includes a third alignment film 352 and a fourth alignment film 354. The third alignment film 352 is disposed on the inner surface 310b of the third substrate 310, and is located on the third substrate 310 and the second twisted pair. The fourth alignment film 354 is disposed on the inner surface 312b of the fourth substrate 312 and between the fourth substrate 312 and the second twisted nematic liquid crystal layer 320. It is to be noted that the rubbing direction of the third alignment film 352 and the alignment direction of the fourth alignment film 354 are substantially perpendicular to each other. Fig. 2A is a view showing the relative positions of the alignment direction of the alignment film and the transmission axis of the polarizing plate in the liquid crystal display panel. In a preferred embodiment of the present invention, 1328714 AU0808072 29402twf.d〇c/d, in the above liquid crystal display panel 2, the alignment direction D1 of the first alignment film 252 and the transmission axis of the first polarizing plate 242 are substantially Vertical on each other. In another preferred embodiment of the present invention, the alignment direction D2 of the second alignment film 254 and the transmission axis 八2 of the second polarizer 244 are substantially perpendicular to each other. It is to be noted that when the alignment direction Di of the first alignment film 252 and the transmission axis 1 of the first polarizing plate 242 are substantially perpendicular to each other, and the alignment direction of the second alignment film 254 and the penetration of the second polarizing film 244 When the axis 八 2 is also substantially perpendicular to each other, the switchable planar stereoscopic display ι can have a better display effect. Fig. 2B is a schematic view showing the relative positions of the alignment direction of the alignment film and the transmission axis of the polarizer in the switchable grating. In a preferred embodiment of the present invention, the alignment direction A of the third alignment film 352 of the switchable grating 30 is substantially perpendicular to the transmission axis 8.3 of the third polarizer 342. In another preferred embodiment of the present invention, the alignment direction D4 of the fourth alignment film 354 and the transmission axis VIII of the fourth polarizing plate 344 are substantially perpendicular to each other. It is to be noted that when the alignment direction D3 of the third alignment film 352 and the transmission axis 8.3 of the third polarizing plate 342 are substantially perpendicular to each other, and the alignment direction d4 of the fourth alignment film 354 and the fourth polarizing plate 344 are worn. When the through-axis A* is also substantially perpendicular to each other, the 'switchable planar stereoscopic display 1' may have a display effect of k. More preferably, if both of the above-mentioned Figs. 2A and 2B are satisfied, the switchable planar stereoscopic display will have a better display effect. In the above embodiment, the first twisted nematic liquid crystal layer 220 has a rotation of 9 degrees clockwise, and the second twisted nematic liquid crystal layer 320 has a rotation of 9 degrees counterclockwise to achieve the first twist direction. The column liquid crystal layer 220 is opposite to the polarity of the second twisted nematic liquid crystal layer 32. In still another preferred embodiment of the present invention, the 13 AU0808072 29402 twf.doc/d of the second polarizing plate 244 is substantially parallel to the transmission axis of the second polarizing plate 282 and the second polarizing plate 342. In other words, the transmission axis of the fourth polarizing plate 344 is substantially perpendicular to the transmission axis a2 of the second polarizing plate 244. In other preferred embodiments of the present invention, the transmission axis VIII of the fourth polarizer 344 and the transmission axis VIII of the first polarizer 242 are substantially parallel to each other. It is to be noted that when the transmission axis a2 of the second polarizing plate 244 and the transmission axis A of the third polarizing plate 342 are substantially parallel to each other, and the transmission axis A* of the fourth polarizing plate 344 and the first polarizing plate When the transmission axes A1 of 242 are substantially parallel to each other, the switchable planar stereoscopic display 1 can have a better display effect. In another embodiment of the present invention, the alignment direction D2 of the second alignment film 254 and the alignment direction D3 of the third alignment film 352 are substantially parallel to each other. That is, the difference between the alignment direction D2 of the second alignment film 254 and the alignment direction D3 of the third alignment film 352 is 0 or 180. In more detail, when the starting point and the end point of the alignment direction D2 of the second alignment film 254 are the same as the starting point and the end point of the alignment direction D3 of the third alignment film 352, the alignment directions 〇2 and 3 of the second alignment film 254 are the same. The alignment direction D3 of the alignment film 352 differs by 〇°. On the other hand, when the starting point of the alignment direction D2 of the second alignment film 254 is the end point of the alignment direction A of the third alignment film, the alignment direction of the second alignment film 254 is different from the alignment direction D3 of the third alignment film 352 by 180°. In still another embodiment of the present invention, the alignment direction D4 of the fourth alignment film 354 and the alignment direction D1 of the first alignment film 252 are substantially parallel to each other. That is, the difference between the alignment direction D4 of the fourth alignment film 354 and the alignment direction Di of the first alignment film 252 is 〇 or 疋18〇. More preferably, the orientation direction of the second alignment film 254 and the alignment direction D3 of the third alignment film AU0808072 29402twf.doc/d 352 are substantially parallel to each other, and the alignment direction E > 4 of the fourth alignment film 354 is also The alignment directions with the first alignment film 252 are substantially parallel to each other. Fig. 3 is a schematic view showing the results of optical simulations in which the first twisted nematic liquid crystal layer and the second twisted nematic liquid crystal layer are the same or the opposite in rotation. Referring to FIG. 1 and FIG. 3, when the first twisted nematic liquid crystal layer 22 is opposite to the second twisted nematic liquid crystal layer 320, the switchable planar stereoscopic display 100 displays 255 gray scales (L255) and 〇 In the gray scale (L〇), the simulation result on the left side of Fig. 3 is presented. Conversely, if the first twisted nematic liquid crystal layer 220 and the second twisted nematic liquid crystal layer 32 have the same swirlability, the switchable planar stereo display 1 displays 255 gray scales (L255) and gray scales (L0). When the simulation results on the right side of Figure 3 are presented. As can be seen from the simulation results shown in FIG. 3, when the first twisted nematic liquid crystal layer 220 and the second twisted nematic liquid crystal layer 32 are opposite in polarity, the contrast of the image displayed by the flat stereoscopic display 100 can be switched (CR). When the gray scale (L0) is used, the image display uniformity is excellent. fruit. There are many types of compensation films.
圖4中分別模擬偏移量是〇 的情形。如圖4所示，當a ’圖示中標示的偏移量為〇。。 在製程上’通常會貼附一些補償膜來提升顯示致 〇、士2°、±4°、±6°、±8。及±1〇 偏移置為0時，其光學模擬結 1328714 AU0808072 29402twf.d〇c/d 果的，形分布左右非常對稱，顯示有極佳的對比度。另 外’當偏移量的範圍在±4。之間時，其結果顯示對比度與 偏移置為0。時的對比相差並不大。也就是說，本實施例 中，指的實質上相互垂直，只要是相交的減為±90。±4。 都是可以接受的誤差範圍。The case where the offset is 〇 is simulated in Fig. 4, respectively. As shown in Figure 4, the offset indicated in the a' diagram is 〇. . In the process, some compensation films are usually attached to enhance the display, 2°, ±4°, ±6°, ±8. And ±1〇 When the offset is set to 0, the optical analog junction 1328714 AU0808072 29402twf.d〇c/d, the shape distribution is very symmetrical, showing excellent contrast. In addition, when the offset is in the range of ±4. When it is between, the result shows that the contrast and offset are set to zero. The contrast between the time is not big. That is to say, in the present embodiment, the fingers are substantially perpendicular to each other as long as the intersection is reduced to ±90. ±4. Both are acceptable error ranges.
々綜上所述’本發明藉由第一扭轉向列液晶層的旋性 與f二扭轉向列液晶層的旋向相反，域液晶顯示面板 中第一偏振片的穿透軸與第二偏振片的穿透軸實質上相 互垂直，並且可切換式光柵中的第三偏振片的穿透轴與 第四偏振片的穿透軸實質上垂直，來使可切換式平面立 體顯示器具有較佳顯示品質。 ^雖然本發明已以實施例揭露如上，然其並非用以限 定本發明’任何所屬技術領域中具有通常知識者，在不 脫離本發明之精神和範圍内，當可作些許之更動與潤 飾，因此本發明夂保護範圍當視後附之申請專利範圍所 界定者為準。In summary, the present invention is characterized in that the polarity of the first twisted nematic liquid crystal layer is opposite to the direction of rotation of the f-twisted nematic liquid crystal layer, and the transmission axis of the first polarizer in the domain liquid crystal display panel and the second polarization The transmission axes of the sheets are substantially perpendicular to each other, and the transmission axis of the third polarizer in the switchable grating is substantially perpendicular to the transmission axis of the fourth polarizer to provide a better display of the switchable planar stereo display quality. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention to those skilled in the art, and may be modified and modified without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
【圖式簡單說明】 體顯示器 圖1為本發明一實施例之可切換式平面立 的示意圖。 圖2A為液晶顯示面板中配向膜的配向方向與偏振 片的穿透軸兩者相對位置的示意圖。 x 圖為可切換式光柵中配向膜的配向方向與偏择 片的穿透軸兩者相對位置的示意圖。 x 圖 為弟一扭轉向列液晶廣與弟一扭轉向列液曰居 16 1328714 AU0808072 29402twf.doc/d 兩者旋性相同或是旋性相反的光學模擬結果示意圖。 * 圖4為補償膜偏移量與顯示效果的關係之光學模擬 •結果的不意圖。 【主要元件符號說明】 100 :可切換式平面立體顯示器 200 .液晶顯不面板 210 :第一基板 • 210a、212a、310a、312a :外表面 210b、212b、310b、312b :外表面 212 :第二基板 220 :第一扭轉向列液晶層 230 :第一廣視角膜組 232 :第一廣視角膜 234 :第二廣視角膜 240 :第一偏振片組 | 242:第一偏振片 244 :第二偏振片 250 :第一配向膜組 252 :第一配向膜 254 :第二配向膜 300 :可切換式光柵 310 :第三基板 312 :第四基板 320 :第二扭轉向列液晶層 17 1328714 AU0808072 29402twf.d〇c/d 330 :第二廣視角膜組 ' 332 :第三廣視角膜 • 334 :第四廣視角膜 340 :第二偏振片組 342:第三偏振片 344 :第四偏振片 350 :第二配向膜組 352 :第三配向膜 • 354 :第四配向膜 A!:第一偏振片的穿透轴 A2 :第二偏振片的穿透軸 A3 :第三偏振片的穿透轴 A4 :第四偏振片的穿透軸 Di :第一配向膜的配向方向 D2:第二配向膜的配向方向 D3:第三配向膜的配向方向 _ D4 ··第四配向膜的配向方向 18BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a switchable planar body according to an embodiment of the present invention. Fig. 2A is a view showing the relative positions of the alignment direction of the alignment film and the transmission axis of the polarizing plate in the liquid crystal display panel. x is a schematic illustration of the relative position of the alignment direction of the alignment film and the transmission axis of the partial selection plate in the switchable grating. x Figure is a schematic diagram of the optical simulation results of the twisted nematic liquid crystal and the younger twisted nematic liquid. 16 1328714 AU0808072 29402twf.doc/d The optical simulation results of the same or the opposite rotation. * Figure 4 is an optical simulation of the relationship between the compensation film offset and the display effect. • The result is not intended. [Main component symbol description] 100: switchable planar stereoscopic display 200. Liquid crystal display panel 210: first substrate • 210a, 212a, 310a, 312a: outer surface 210b, 212b, 310b, 312b: outer surface 212: second Substrate 220: first twisted nematic liquid crystal layer 230: first wide viewing angle film group 232: first wide viewing angle film 234: second wide viewing angle film 240: first polarizing film group | 242: first polarizing plate 244: second Polarizing plate 250: first alignment film group 252: first alignment film 254: second alignment film 300: switchable grating 310: third substrate 312: fourth substrate 320: second twisted nematic liquid crystal layer 17 1328714 AU0808072 29402twf .d〇c/d 330: second wide viewing angle film group '332: third wide viewing angle film> 334: fourth wide viewing angle film 340: second polarizing plate group 342: third polarizing plate 344: fourth polarizing plate 350 : second alignment film group 352 : third alignment film • 354 : fourth alignment film A!: transmission axis A2 of the first polarizing plate: transmission axis A3 of the second polarizing plate: penetration axis of the third polarizing plate A4: the transmission axis Di of the fourth polarizing plate: the alignment direction D2 of the first alignment film: the alignment direction of the second alignment film D3: Alignment film _ D4 ·· alignment direction of the alignment direction of the fourth alignment film 18